For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Dropbox - Online Sync and File Sharing
UpdraftPlus - UpdraftPlus is a WordPress backup plugin.
Google Drive - Access and sync your files anywhere
Jottacloud - Safe cloud storage
Mega - Secure File Storage and collaboration
EaseUS Data Recovery Wizard - Advanced data recovery software to do format recovery, unformat and recover deleted files emptied...